How To Get A Bike Lock Off Without Key. By using a ballpoint pen you can easily break U-lock of the bike to jimmy the lock. Use a fiberglass cutting disc.
Once you have the correct size marker to fit into the key. I could have easily cut it off but it was more fun to pick the lock. Now this pen trick will normally only work with tubular locks or excellent U-locks.
There are also other ways.
Answer 1 of 2. If none of those things work to get the key out you have to really defeat the lock. There are leverage attacks but those are likely to break the bike. Id have though that taking your bikes purchase receipt with you is probably not a bad idea if you dont want to have too much explaining to do.
